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export util

database is using in industrial system and developer's firm not permit migrate to oracle>7.3. i am wanted make full export/incremental export/cummulative export for save our data. but export file size not more 2Gb and i want use exp from 8.1.

The rule is, when going from version X to version Y:
- export with the lower version of X and Y, from db X
- import with version Y, into db Y
(see Tom Kyte 1-on-1 p.353)

Added later: From the manual:

Using a Higher Version Export
Attempting to use a higher version of Export with an Oracle Server often produces the following error:
EXP-37: Database export views not compatible with Export utility
EXP-0: Export terminated unsuccessfully
The error occurs because views that the higher version of Export expects are not present. To avoid this problem, use the version of the Export utility that matches the Oracle Server.

Sounds like you will have to break up the export job into pieces - generating the TABLES= statements from DBA_TABLES.